ifwhether引导的宾语从句

if/whether 引导的宾语从句、由if或whether引导的宾语从句。if/whether“是否”，说明对陈述的事物不明确或不清楚。常用在ask,wonder,can(could)youtellme等后，二者通常可以互换。例如：Lilyaskedif/whethershelikedit.莉莉冋她是否喜欢它。Iwanttoknowif(whether)helivesthere.我想知道他是否住在这儿。Heaskedmewhether(if)Icouldhelphim.小试牛刀：1、asked.Couldhecomeatseven他问我是否可以帮助他。2、Shewantedtoknow.Didyouhaveagoodtime二、只能用whether不能用if的情况(1)在介词后面：例如：I'mthinking fwhetherweshouldgofishing.Weareworriedaboutwhetheritwillraintomorrow.(2)在动词不定式前(whethertodosth.) :例如：Theyaskedmewhethertogoskating. 当与ornot连用，或提出两种选择时：例如：Idon'tknowwhetherhe'sfreeornot.MaryaskedwhetherIwasdoingmyhomeworkornot.宾语从句提前时：例如：Whetherthisistrueornot,Ican 'tsay.小试牛刀：请用if、whether填空Iaskedher shehadabike.We'reworriedabout heissafe.Iwonder heiswell.Idon 'tknow ornotheiswell.Idon 'tknow togo.三、宾语从句的语序：引导词+主语+谓语+其他成分例如：Ithinkthatwecanbegoodfriends.Ican'trememberifIpostedtheletter.Mayweaskwhatyouaredoing引述动词用ask，没有间接宾语的可以加一个间接宾语 me,him等。例如：ShesaidtoTom,“Canyouhelpme”fSheaskedTomif/whetherhecoul dhelpher.Sheasked,“Isthisbookyoursorhis”fSheaskedmewhetherthatbookwasmineorhis.小试牛刀：1 、Theteacherasked,“Areyou waiting forthebus”fTheteacherasked . 2、 Heasked, “AreyouaPartymemberoraLeaguemember”fHeasked .3、Hesaid,“Didyouseemelastnight ”f .练习一、单选题。Theyoungmanasked it'ssummerorwinter.A.eitherB.thatC.weatherD.whetherIdon'tknow hewillcometomorrow. hecomes,I'lltellyouA.if;WhetherB.whether;WhetherC.if;ThatD.if;IfTheteacherasksus Jimcancomebackontime.A.thatB.ifC.whenD.whattimeDoesanybodyknow wewillhaveasportsmeetingthisweekendornot.A.if B. whereC.whetherD.thatHesaysthatifit tomorrow ,he fishing.A.willrain,won'tgoB.rained,wasn'tgo C.rains,won'tgoD.rain,willgo二、按要求填空。1、Iwanttoknow .（ 他是否要和我们一起去 Party）2、 Askhim .（他是否能来）3、Couldyoutellme （李先生是否住这里）4、 DotheyliketogoskiingHeasked. （将句子合并为一句）5、 IsshedoingherhomeworkJimasked. （将句子合并为一句）6、 ShesaidtoTom,“Arethereanyapplesonthetable ”f .7、 Sheasked,“Haveyoufinishyourhomework”fDDBCCwhether(if)hewillgototheparkwithuswhether(if)hecancomewhether(if)Mr.LiliveshereHeaskediftheylikedtogoskiing5、 Jimaskedifshewasdoingherhomework6、 ShesaidtoTomifthereweresome